Many thanks to Gladys Cuttle and the Joseph Thomson Group SC029176 for the following information. Gatelawbridge Brickworks, Thornhill, Dumfriesshire. William George Thomson 1820-1899 was a Master Stonemason. William George Thomson leased a quarry at Gatelawbridge from 1868 to 1899 and records show he was a Master, Quarry Mason. Thomson leased the land from Duke of Buccleuch….